Caliso 374K6 K-Section Poly V Serpentine Belt - 6-Rib 37.4in

The Caliso 374K6 is a K-section Poly V serpentine belt featuring 6 ribs and a 37.4-inch pitch length (38.15-inch outside circumference). Designed as a direct-fit replacement for OEM accessory drive systems, this belt delivers reliable power transfer to engine-driven accessories including alternators, power steering pumps, water pumps, and air conditioning compressors.

The K-section (PK) profile features a 3.56mm rib pitch specifically developed for automotive serpentine drive applications. The Poly V design combines the compact profile of a flat belt with the strong frictional grip of multiple V-belts, enabling efficient power transmission even on smaller pulley diameters.

Key Specifications:

• Belt Section: K (PK) — 3.56mm rib pitch
• Number of Ribs: 6
• Pitch Length: 37.4 inches (950mm)
• Outside Circumference: 38.15 inches
• Top Width: 0.84 inches (21.3mm)

Cross-Reference Part Numbers:

• Dayco: 5060374
• Gates: K040398
• Napa: 25-060374 / 25060374
• Goodyear: 4060374
• Bando: 6PK0949

Also commonly referenced as an FVP Poly V belt, the 374K6 meets standard RMA rating levels for automotive serpentine belt applications.